Method and apparatus for compressing loose material in bags



Nov. 15, 1927. 1,649,362

6. NAGEL METHOD AND APPARATUS FOR COMPRESSING LOOSE MATERIAL IN BAGS is l a Filed Nov. $2926 ,Anoragy. r

- Patented Nov. 15, 1927.

UNITEDSTATES PATENT, OFFICE.

CARL NAGEL, or GLIESMARODE, NEAR BRUNSWICK, GERMANY.

mnrnon AND nrrnnaros ron ooivrrnnssine Loosn MATERIAL. IN nAGs.

Application filed November 27, 1926, Serial No. 151,141, and in Germany November 30, 1925.

My invention relates to improvements in the method of and apparatus for compressing flour and other loose material contained in bags, and the ob ect of the improvem'entsis to provide amethod and an apparatus by means of which the loose material is compressed within the bag without developing dust. lVith this object in View my invention consists in exerting pressure on the outside of the bag while filling or after filling the same, the said pressure being gradually advanced alongside the bag in downward direction so as to exert a wiping pressure at one or more points of the bag. -I have found that thereby the loose material within the bag is rapidly compressed without development of dust. v

My improved method and apparatus are particularly suitable in connection with automaticweighing machines. I V

F or the purpose of explaining the invention several forms of apparatussuitable for utting my improved method into effect ave been shown in the accompanying draw ing, in which Fig; 1, isa diagrammatical elevation showing my improved compressing apparatus,

and f Figs. 2 to 4, are similar elevations showing modifications. p A F In the example shownin Fig. l a bag 6 is attached to afunnel' forming a part of a weighing machine (not shown) or the like.

" At opposite sidesof the said bag shafts k are rotatably mounted to which cranks 0 are secured. On the crank pins m rollers 04 are loosely mounted. Suitable means are provided for imparting rotary movement to the shafts is. To show what may be done, worm gearings n are keyed to the shafts 70 which are in engagement with worms 0 keyed to a rotary shaft p.

By means of the said worm gearing rotary movement is imparted to the shafts is, so that the rollers 03 revolve in the direction of the arrows 00, and whenever the rollers en-' gage the bag they first compress the ma-,

nected with each other by chain and sprocket mechanisms 6'. One of the pairs of shafts k is providcd'with suitable driving-mechanism such as has been shown in F lg.- 1 by way'of'example. As appears from Fig. 2 the cranks are mounted on the shafts k so that all the rollers same time. 1

In Fig. 7 cation in which more than two rollers'are provided at each side of the bag. As shown at each side of the bag a frame 7" is suspended-by-meansof a rod 7 engaged'between a pair of bolts or rollers g, the said rods f being referably curved at their top ends. On eac frame f three rollers d are loosely mounted, and theframe f is engaged by a crank 0 keyed to a shaft 72 By the rotary movement of the shafts k revolvin movement is imparted to the rollers d-, which therefore simultaneously press on the bag from opposite sides and i move downwardly along the bag thus exerting a wiping action thereon. The revolving" movement of the frame fand the rollers d has been indicated inFig. 3 in dotted lines.

In theconstruction shown in Fig. 4: an endless Cl'lillILi mounted on sprocket wheels k and k is providedateach side of the bag, and some of the links of the chainc' have rollers d loosely mounted thereon. Suitable means are provided for simultaneously rotating the shafts pon which the sprocket wheels 6 and e are mounted. Thus corresponding rollers (Z3 are simultaneously brought into engagement with opposite sides of the bag andmoved downwardly along the said bag.

Preferably the shafts p are mounted in bearing blocks g slidable in guide ways 1" and adapted to be set in different distances d act on the bag at the 3 I have shown another modifi In all the figures I have shown two pressing members or sets of pressing members provided at opposite sides of the bag. But I wish it to be understood that I do not limit myself to a construction in which only two members or sets of members are provided, and that in case of large bags more than two pressing members are provided around,

the bag. I have found that in some cases good results are obtained when providing a pressing member of the construction described herein at one side of the bag only, in which case however a fixed wall must be provided for supporting the bag at the side opposite to the pressing member.

Further, I do not limit myself to a con struction in which rotary'pressing members such as d are provided, though this is the preferred construction for the reason that the wear of the bag is comparatively small. But in some cases I may use non-rotary pressing' members.

I claim:

1. The herein described method of compressing loose mater-ial in elastic containers, which consists in exerting downwardly directed wiping pressure on the side of the container. v

2. An apparatus for compressing loose ma terial in bags and the like, comprising a pressing member, and means for pressing said member on the side of the "bag and moving the same downwardly while exerting pressure on the bag.

cAn'a p'pa-ratus for compressing loose material in bags and the like, comprising means for suspending the bag, a rotary shaft below and laterally of said suspending means, a-pressing member eocentrically mounted on said rotary shaft and in position forpressing engagement'with a bag being suspended from said suspending means, and means to rotate said shaft in a direction for moving said pressing member into pressihgengagement with. said bag and downwardly along said bag. I

4:. An apparatus for compressing loosema terial in bags and the like, comprising means for suspending the bag, a plurality of rotary shafts located below and at one slde of sald suspending means and one above the other,

pressing members eccentrically mounted on said shafts in position for pressing engage ment with a bag suspended from said suspending means,a-nd means to rotate said shafts at equal velocity and in a direction for moving said pressing members along said bag downwardly. v

6. An apparatus for compressing loose material in bags and the like, comprising means for suspending a bag, a frame disposed below and laterally of said suspending means, rollers rotatably mounted on said frame one above the other, and means to impart gyratory movement to said frame 'and'ro-llers in a direction for moving said rollers into pressing engagement with :a bag suspended from said suspending means and downwardly along the same. 7 i

7 An apparatus for compressing looser-material in bags and the like, comprising means for suspending a bag, a plurality of pressing members located below and at opposite :sides of said suspending means, and means for, simultaneously moving said-pressing members into pressing engagement with a bag suspended from said suspending means :and-

downwardly along said bag. 1

In testimony whereof I have rhereunto'lset my hand.

CARL ,NAGEEL, 

